Love those catalogs. The latest one I've had a chance to peruse comes from tea merchant TeaGschwender, who are based in Germany and have a U.S. office in Chicago.
Though it’s a catalog, the name Book of Tea is not totally off-base, since it's actually one of the more informative tea catalogs I've encountered. Each of the company's products - teas and accessories - are listed, along with descriptions and preparation instructions for each of the teas.
The catalog also serves as a very informative primer on the world of tea - literally - with brief, but informative, articles on each of the world's major tea growing regions.
To peruse TeaGschwender's goods online and to get a copy of the Book of Tea, go here.